Symplocos paniculata, Himilayas, eastern Asia Sinojackia rehderiana and Sinojackia xylocarpa, China, just started blooming Several Pittosporums are in bloom, here is Pittosporum subulisepalum, China Cornus controversa, eastern Asia Syringa yunnanensis, China. I noticed ine flower has many petals, I checked pictures from last year and found that this tree last year had the same flower with many petals
This is a picture from last year, May 31, 2012 One flower looks very different from all regular others